Chemistry For HSC Part 2 - MCQs From All Chapters - By Adamjee Coaching Center

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Multiple Choice Questions
From All Chapters

By Adamjee Coaching Center

1. How many elements have been discovered so far?

• 100
• 110
• 120
• 150

2. Which of the following discovery resulted in a revision of the Mendeleev's periodic law?

• The nucleus of atom by Rutherford
• The elements polonium and radium by the curies
• Atomic numbers by Moseley
• X - Rays by Roentgen

3. Who classified the known elements into metals, nonmetals and their derivatives?

• Doberenier
• Al-Razi
• Newland's
• Mendeleev

4. In 1829, a German chemist,_____ made use of the idea of relationship between atomic weights and properties of elements for the classification of elements.

• Doberenier
• Al-Razi
• Newland's
• Mendeleev

5. The law of octaves was given by

• Doberenier
• Al-Razi
• Newland's
• None

6. "Physical and chemical properties of elements are periodic functions of their atomic weight". This is called

• Doberenier's law of Traids
• Newland's law of Octaves
• Mendeleev's Periodic law
• None

7. Lother Mayer arranged the elements in order of their increasing atomic weights and found that

• Physical properties of the elements were the periodic function of their atomic weights.
• Chemical properties of the elements were the periodic function of their atomic number
• Physical properties of the elements were the periodic function of their atomic number.
• Chemical properties of the elements were the periodic function of their atomic weights.

8. Modern classification of elements is based on

• Doberenier's law of Triads
• Newland's law of Octaves
• Mendeleev's Periodic law
• None

9. Which property is same in elements of same group of periodic table?

• Ionization potential
• Electronegativity
• Electron affinity
• Number of valance electrons

10. The valency, ionization energy, electron affinity and electronegativity of elements are related to its

• Atomic weight
• Properties
• Atomic size
• Family group

11. Which of the following is the set of most electronegative elements?

• Na, Mg, Al
• Ca, Sr, Ba
• N, 0, F
• Fe, Co, Ni

12. Which of the following elements has maximum ionization potential?

• Mg
• Al
• Na
• K

13. Each vertical column of the periodic table includes elements with chemical characteristics that are in general

• Non identical
• Similar
• Different
• Similar as well as different

14. Each horizontal row of the periodic table includes elements with chemical characteristics

• Identical
• Similar
• Different
• Similar and different

15. According to the Modern periodic law. the chemical properties of the elements are periodic functions of their

• Density
• Atomic number
• Atomic mass
• Mass number

16. The 3d transitional series contains elements having atomic numbers from

• 22 to 23
• 21 to 29
• 21 to 30
• 21 to 31

17. Elements in group IB, IIB through VIIB are known as

• Rare earth metals
• Transition elements
• Lanthanides
• Actinides

18. The fourteen elements following lanthanum are known as

• Lanthanones
• Lanthanides
• Rare earths
• All

19. Which of the following elements have the larger radius?

• F
• Cl
• Br
• I

20. Nitrogen is comparatively inert element because it has

• Stable electronic configuration
• Low atomic radius
• High electronegativity
• High dissociation energy

21. The trend of change in melting points and boiling points of elements in the period from left to right is graded

• Increase
• First increase then decrease
• decrease
• First decrease then increase